The number of atoms of an element present in one molecule of a substance

Which of the following are interactions between particles in a liquid? a. ionic bonds b. covalent bonds c. van der waals forces d. metallic bonds e. hydrogen bonds

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What is the net ionic equation for the precipitation reaction between bacl2 and na2so4? a bacl2 (aq + na2so4 (aq? baso4 (s + 2nacl (aq b ba2 + (aq + so42 - (aq? baso4 (s c na + (aq + cl - (aq?

Complete the following reaction by drawing the missing reactant ("Structure A"). (Draw only one neutral organic compound in the empty box. "Ph" is an abbreviation for a benzene ring. Draw the benzene ring out in your answer.)

Essential processes happen in a cell

A percent composition analysis yields 46.7% nitrogen and 53.3% oxygen. What is the empirical formula for the compound

A rock has 12.5 percent of its original amount of potassium-40 remaining in it; potassium-40 has a half-life of 1.25 billion years. How long ago was the rock formed? A. 1.25 billion years ago B. 2.5 billion years ago C. 3.75 billion years ago D.

Calcium is an element. What is the smallest particle of calcium that has all the chemical properties of calcium?

Which is the best term to use when describing the energy of motion

The pka of hypochlorous acid is 7.530. a 54.0 ml solution of 0.114 m sodium hypochlorite (naocl) is titrated with 0.337 m hcl. calculate the ph of the solution